Air Quality Monitoring Program

Transcription

1 BROKEN HILL OPERATIONS PTY LTD Air Quality Monitoring Program BHO-ENV-PRM-001 RASP MINE Air Quality Monitoring Program Doc No.: BHO ENV PRM 001 DISTRIBUTION: CONTROLLED REV DATE REVISION PREPARED REVIEWED APPROVED SCOPE/PURPOSE INIT SIGN INIT SIGN INIT SIGN Original DR Correct references at Appendix A1, Update photographs at Appendix C Damon Roddis ENVIRON GW Gwen Wilson BB Brendan Barker BJ Ben Jones GW Gwen Wilson BB Brendan Barker Document Owner Environment & Community Officer Signature Ben Jones Department SH&E Date 2 April 2012 Page 1 of 69

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3 Table of Contents Page 1.0 Introduction Background Purpose Statutory Requirements Legislation Licences And Approvals Environmental Protection Licence Development Consent Ambient Air Quality Criteria Long-Term Impact Assessment Criteria for Particulate Matter Short-Term Impact Assessment Criterion for Particulate Matter Dust Deposition Interpretation of Ambient Air Quality Criteria In-Stack Air Quality Criteria Monitoring Standards Monitoring Locations And Protocol Monitoring Equipment And Locations Air Quality Monitoring Locations and Network Log Meteorological Monitoring Overview of Wind Patterns Real Time Particulate Monitoring for Operational Dust Management Point Source Monitoring Meteorological Forecasting for Operational Dust Management Lead in Soil Monitoring Reporting Incident Reporting Regular Reporting Monitoring Data Screening, Analysis and Storage Non-Routine Operations Log Auditing And Review Air Quality Monitoring Program Review Independent Environmental Audit Accountability Procedures References D1 Existing Local Sources of Atmospheric Emissions D2 Monitoring Data Available for Baseline Air Quality Characterisation D3 Ambient TSP Concentrations D4 Measured Ambient PM 10 Concentrations D5 PM 10 Concentrations as a Fraction of TSP Levels 62 BHO ENV PRM

4 9.6 D6 Projected PM 10 Concentrations for Project Assessment Purposes D7 Ambient PM 2.5 Concentrations D8 Dust Deposition D9 Ambient Lead Concentrations D10 Ambient Levels of Other Metals/Metalloids 69 BHO ENV PRM

5 List of Tables and Figures Table 1: Long term impact assessment criteria for particulate matter Table 2: Short term impact assessment criterion for particulate matter Table 3: Dust Deposition Criteria Table 4: Discharge Criteria for Point 1 Ventilation Shaft (Little Kintore Pit) Table 5: Discharge Criteria for Point 2 Process Enclosure / Baghouse Stack Table 6: Summary of Monitoring Locations Table 7: Rasp Mine Ambient Air Quality and Meteorological Monitoring Program Table 8: Accountabilities for the Air Quality Monitoring Program Table D1 Industrial operations and mines situated within 5 km of the Project Area Table D2 - Monitoring data sets used in the baseline air quality characterisation Table D3 TSP and PM10 Dataset Statistics January 2008 to December Table D4 Dust Deposition Statistics March 2007 to December Table D5 Dust Deposition Annual and Period Averages Table D6 - Pb concentrations from TSP Monitoring BHOP HVAS Table D7 Dust Deposition and Pb comparison March 2007 to December List of Figures Figure 1: Location of Ambient Air Quality and Meteorological Monitoring Sites associated with Rasp Mine 17 Figure 2: Annual and seasonal wind roses for Broken Hill Airport AWS (2009) 20 Figure D1: Locations of BHOP monitoring stations 60 Figure D2: 24-hour average TSP concentrations recorded at BHOP HVAS during January 2008 to December Figure D3: 24-hour Average PM10 concentrations recorded by Bemax during January 2008 to December Figure D4: Distribution of TSP and PM10 concentrations in Broken Hill region January 2008 to December Figure D5: Constructed PM10 Concentration Dataset (January 2008 to December 2009) Bemax PM10 and PM10 from BHOP HVAS TSP 64 Figure D6: Distribution of Constructed PM10 Concentration (data set constructed from Bemax PM 10 measurements and derived PM 10 levels from BHOP HVAS TSP measurement) for January 2008 to December Figure D7: Distribution of BHOP Dust Deposition Levels March 2007 to December Figure D8: Percentage Lead Concentrations in 24-hour Average TSP Concentrations at BHOP HVAS May 2007 to December List of Appendices Appendix A Development Consent Appendix B Location of Air Quality Monitoring Relative to Air Quality Assessment Impact Predictions Appendix C Air Quality Monitoring Network Log Appendix D Baseline Air Quality Monitoring Data BHO ENV PRM

6 Glossary of Terms AEMR AMMAAP AWS BoM CML DECCW DoP Dust Deposition Annual Environmental Management Report Approved Methods for the Modelling and Assessment of Air Pollutants in NSW Automatic Weather Station Australian Bureau of Meteorology Consolidated Mining Licence NSW Department of Environment, Climate Change and Water NSW Department of Planning Dust particles that settle out from the air-measured in grams per square meter per unit time (g/m 2 /time) EETMM Emission Estimation Technique Manual for Mining, Version 2.3 EMS ENVIRON HVAS Environmental Management System ENVIRON Australia Pty Ltd High Volume Air Sampler mg Milligram (g x 10-3) µg Microgram (g x 10-6) µm Micrometre or micron (metre x 10-6) m 3 ML NEPC NEPM NHMRC NPI PM 10 PM 2.5 ROM TEOM TSP USEPA Cubic metre Mining Licence National Environment Protection Council National Environment Protection Measure National Health and Medical Research Council National Pollutant Inventory Particulate matter less than 10microns in aerodynamic diameter Particulate matter less than 2.5microns in aerodynamic diameter Run of Mine Tapered Element Oscillating Microbalance Total Suspended Particulate United States Environmental Protection Agency BHO ENV PRM

7 1.0 Introduction 1.1 Background Broken Hill Operations Pty Ltd (BHOP), a wholly owned subsidiary of CBH Resources Limited (CBH) has been granted approval to commence mining operations at the Rasp Mine in Broken Hill, NSW. Approval has been granted for mining within the Western Mineralisation and Centenary Mineralisation and Main Lode Pillars, zinc-lead-silver masses within the Project Area and production of zinc and lead concentrates. Mining will take place over 15 years including one year to construct the processing plant, one year to complete closure activities and an estimated 13 years for extraction of ore from underground mining, at a maximum rate of 750,000tpa. Department of Planning (DoP) approved the project on 31 January 2011, comprising MP 07_0018, which included conditions to monitor and report on air quality. 1.2 Purpose This monitoring program was developed to provide an overview of air quality monitoring undertaken by the BHOP Rasp Mine. This program documents the statutory conditions, standards, locations and reporting requirements for air quality monitoring undertaken by BHOP across its mining operations and neighbouring properties. Ambient air quality monitoring is an integral part of the BHOP Rasp Mine Air Quality Management Plan, in that it is a mechanism by which performance against the following may be evaluated: Site Objectives and Targets; BHOP Policies; Statutory requirements with respect to air quality; and Acceptable air quality impacts on neighbouring residents, sensitive receptors and public roads. Data gathered through air quality monitoring demonstrates the effectiveness of the Air Quality Monitoring Plan and evaluates performance against continual improvement objectives. Additionally, this document addresses the requirements of Condition 11(c) of Schedule 3 of Development Consent MP 07_0018 requires that the site s Air Quality Management Plan must: (c) include an air quality monitoring program that: provides for periodic point source monitoring at Point 1 (Ventilation Shaft Little Kintore Pit) and Point 2 (Process Enclosure/ Baghouse Stack); provides for continuous ambient monitoring across an ambient air quality and dust monitoring network comprising no fewer than ten monitoring locations (Points 3 to 12) for total suspended particulates, PM 10, lead and dust deposition. Monitoring locations shall be informed by the outcomes of BHO ENV PRM

8 the air quality assessments presented in the EA and PPR and identified in consultation with DECCW; and provides for continuous meteorological monitoring using a meteorological monitoring station located on the site; is consistent with the requirements of Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales (DECC, 2007), the Protection of the Environment Operations Act 1997 and the Protection of the Environment (Clean Air) Regulation BHO ENV PRM

9 2.0 Statutory Requirements 2.1 Legislation The Rasp Mine Air Quality Monitoring Program has been developed with reference to: The Protection of the Environment Operations Act 1997 (POEO Act) administered by the Department of Environment, Climate Change and Water (DECCW); and Environmental Planning and Assessment Act 1979 (EP&A Act) administered by the DoP. 2.2 Licences And Approvals Environmental Protection Licence Environmental Protection Licences (EPLs) are administered by the DECCW. BHOP holds EPL 12559, which covers operations at the Rasp Mine prior to Project Approval. DECCW are currently in the process of varying this Licence in line with the Project Approval and this section will be updated once this process has been completed Development Consent Development Consent MP 07_0018 requires periodic point source monitoring at the site s Ventilation Shaft and the crushing circuit baghouse stack, as well as continuous ambient monitoring across an ambient air quality and dust monitoring network comprising no fewer than ten monitoring locations for total suspended particulates (TSP), particulate matter less than 10 microns in aerodynamic diameter (PM 10 ), lead and dust deposition. Continuous meteorological monitoring using an on-site meteorological monitoring station is also required. Further details of Consent conditions relevant to air quality are provided in Appendix A. 2.3 Ambient Air Quality Criteria Development Consent MP 07_0018 specifies two classes of air quality impact assessment criteria relevant to mining operations. These classes relate to dust deposition and particulate concentration levels. Dust deposition levels refer to the quantity of dust particles that settle out from the air as measured in grams per square metre per month (g/m 2 /month) at a particular location. Particulate concentration refers to airborne dust and is measured in micrograms per cubic metre of air (µg/m 3 ). Condition 3 of Schedule 3 of Development Consent MP 07_0018 states: 3. The Proponent shall ensure that all reasonable and feasible avoidance and mitigation measures are employed so that particulate matter emissions generated by the project do not cause an exceedance of the criteria listed in Tables 1, 2 or 3 at any residence on privately-owned land. Tables 1 to 3 referred to above are summarised in Table 1, Table 2 and Table 3 below. BHO ENV PRM

10 2.3.1 Long-Term Impact Assessment Criteria for Particulate Matter The criteria for particulate concentration are defined in terms of two particle size fractions: TSP and PM 10. TSP relates to particles of all size able to remain suspended in the atmosphere; typically particulate matter with aerodynamic diameters of up to 30 micrometres (μm). PM 10 refers to particulate matter with an aerodynamic diameter less than 10μm. Thus PM 10 is a sub-component of TSP. The Development Consent MP 07_0018 long term impact assessment criteria for particulate matter are summarised in Table 1. Table 1: Long term impact assessment criteria for particulate matter Pollutant Averaging period d Criterion Total suspended particulate (TSP) matter Particulate matter < 10 µm (PM 10 ) Annual Annual a 90 µg/m 3 a 30 µg/m Short-Term Impact Assessment Criterion for Particulate Matter An Impact Assessment Criterion for maximum 24-hour average PM 10 is specified within the Rasp Mine Development Consent (MP 07_0018), as provided within Table 2. Table 2: Short term impact assessment criterion for particulate matter Pollutant Particulate matter < 10 µm (PM 10 ) Averaging period 24 hour d Criterion a 50 µg/m Dust Deposition The Development Consent MP 07_0018 expresses dust deposition criteria in terms of both an acceptable increase in dust deposition over the existing background levels and an absolute maximum value. These impact assessment criteria are summarised in Table 3. BHO ENV PRM

11 Table 3: Dust Deposition Criteria Pollutant Averaging period Maximum increase in deposited dust level Maximum total deposited dust level c Deposited dust Annual b 2 g/m 2 /month a 4 g/m 2 /month Interpretation of Ambient Air Quality Criteria The following notes are provided relating to the Impact Assessment Criteria shown in Table 1, Table 2 and Table 3, as they appear within Condition 3 of Schedule 3 of MP 07_0018: a Total impact (i.e. incremental increase in concentrations due to the project plus background concentrations due to all other sources). b Incremental impact (i.e. incremental increase in concentrations due to the project on its own). c Deposited dust is assessed as insoluble solids as defined by Standards Australia, 2003, AS : Methods for Sampling and Analysis of Ambient Air - Determination of Particulates - Deposited Matter - Gravimetric Method. d Excludes extraordinary events such as bushfires, prescribed burning, dust storms, fire incidents, illegal activities or any other activity agreed by the Director-General in consultation with DECCW. Particularly relevant given the arid, semi-desert climate of Broken Hill, Section of the DECCW s Approved Methods for the Modelling and Assessment of Air Pollutants in NSW (AMMAAP, 2005) outlines the approach for dealing with elevated background concentrations. This section reads as follows (p.20): In some locations, existing ambient air pollutant concentrations may exceed the impact assessment criteria from time to time. In such circumstances, a licensee must demonstrate that no additional exceedances of the impact assessment will occur as a result of the proposed activity and that best management practices will be implemented to minimise emissions of air pollutants as far as is practical. Reference is made to a worked example given in Section 11.2 of AMMAAP. Thus, compliance with Condition 3 of Schedule 3 of MP 07_0018, which states that particulate matter emissions generated by the project do not cause an exceedance of the criteria, may be demonstrated through the comparison of concurrent upwind and downwind concentration measurements. In cases where a downwind station records an exceedance of the short-term PM 10 criterion of 50 µg/m³ (refer Table 3), whereas no exceedance was measured at an upwind station, the mine could be seen as being responsible for the exceedance and therefore in non-compliance. BHO ENV PRM

12 It is anticipated that the upwind and downwind approach may be instructive in some instances by referencing observations from the Rasp Mine s TEOM1 and TEOM2, combined with concurrent meteorological data (refer Section 4.5). 2.4 In-Stack Air Quality Criteria The DECCW specify in-stack performance criteria within the Protection of Environment Operations (Clean Air) Regulation (2010). Standards of concentration specified in this document represent minimum requirements for point source emissions within NSW. They are generally expressed in terms of milligrams per cubic metre of air (µg/m 3 ), expressed at reference conditions (typically Dry, 273 K, kpa). Condition 4 of Schedule 3 of Development Consent MP 07_0018 states: 4. The Proponent shall ensure that the project is operated in a manner that does not exceed the criteria listed in Tables 4 and 5. Tables 4 to 5 referred to above are summarised in Table 4 and Table 5 below. Table 4: Discharge Criteria for Point 1 Ventilation Shaft (Little Kintore Pit) Pollutant Units of Measure Concentration Limit Oxides of nitrogen (as NO 2 ) Milligrams per cubic metre 350 Total solid particles (TSP) Milligrams per cubic metre 20 a Type 1 and Type 2 substances Volatile organic compounds (as n-propane) Milligrams per cubic metre 1 Milligrams per cubic metre 40 Table 5: Discharge Criteria for Point 2 Process Enclosure / Baghouse Stack Pollutant Units of Measure Concentration Limit Total solid particles (TSP) Milligrams per cubic metre b TBD a Type 1 and Type 2 substances Milligrams per cubic metre b TBD The following notes are provided relating to the Discharge Criteria shown in Table 4 and Table 5, as they appear within Condition 4 of Schedule 3 of Development Consent MP 07_0018: a Total of Sb, As, Cd, Pb, Hg, Be, Cr, Co, Mn, Ni, Se, Sn and V; BHO ENV PRM

13 b TBD means that the limit must be proposed by the Proponent and agreed by the Director-General in consultation with DECCW and be based on the results of postcommissioning test results. The limit must be proposed prior to the second sampling occurrence at Point 2; and reference conditions for the limits in Tables 4 and 5 are: dry, 273K and kpa. Consistent with note (b) above, the Discharge Limit for the baghouse stack serving the crusher circuit will be proposed to the Director-General in consultation with DECCW following completion of post-commissioning test results (refer Section 4.6). Proposed Discharge Limits should be provided following consultation with both the baghouse provider and the stack testing consultant to ensure that proposed Discharge Limits are set outside of the tolerances of normal baghouse operation, to flag any equipment upset. BHO ENV PRM

14 3.0 Monitoring Standards Air quality monitoring will be undertaken in accordance with all relevant Australian Standards, legislation and DECCW approved methods for sampling. The Australian Standards and DECCW approved methods relevant to the Air Quality Monitoring Program are listed below: All sampling and analysis will be undertaken in accordance with the POEO (Clean Air) Regulation 2010 and the guidelines specified in the DECCW publication of Approved Methods for the Sampling and Analysis of Air pollutants in New South Wales (2007); All dust deposition gauges will be sampled monthly for insoluble solids in accordance with AS/NZS (2003) Methods for sampling and analysis of ambient air determination of particulate matter deposited matter gravimetric methods; As per AM-19, DECCW, 2007, Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales; High Volume Air Samplers (HVAS) will measure and analyse TSP in accordance with the guidelines specified in AS/NZS (2003) Methods for the Sampling and Analysis of Ambient Air Determination of Suspended Particular Matter Total Suspended Particulate Matter (TSP) High Volume Air Sampler Gravimetric Method; As per AM-15, DECCW, 2007, Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales; High Volume Air Samplers (HVAS) will measure and analyse PM 10 in accordance with the guidelines specified in AS/NZS (2003) Methods for Sampling and Analysis of Ambient Air Determination of Suspended Particulate Matter PM 10 High Volume Sampler with Size Selective Inlet Gravimetric Method; As per AM-18, DECCW, 2007, Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales; and Tapered Element Oscillating Microbalances (TEOMs) will measure and analyse continuous PM 10 in accordance with the guidelines specified in AS/NZS (2008) Methods for sampling and analysis of ambient air -Determination of suspended particulate matter - PM 10 continuous direct mass method using a tapered element oscillating microbalance analyser; As per AM-22, DECCW, 2007, Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales. Site-specific procedures for the monitoring of the above parameters, in-line with the above sampling techniques, are provided as Appendix C of this document. Finally, the following standards are noted with respect to monitoring of Discharge Limits: Monitoring of the Discharge Limits shown in Table 5 and Table 6 will be conducted in accordance with the guidelines specified in AS (1995) BHO ENV PRM

15 Stationary Source Emissions Method 1: Selection of Sampling Positions (DECCW TM-1); individual discharge parameters will be assessed as per: TM-2 (USEPA (2000) Method 2 or 2C or USEPA (1999) Method 2F or 2G or 2H (as appropriate)), TM-11 (USEPA (2000) Method 7 or 7A or 7B or 7C or 7D or USEPA (1990) Method 7E or USEPA (1996) Method 20 or ISO (1993) Method (as appropriate). NOx analysers may be substituted in Method 7E provided the performance specifications of the method are met. Both NO and NOx must be directly measured), TM-12 (USEPA (2000) Method 29), TM-13 (USEPA (2000) Method 29 (Analysis for tin and vanadium to be done by Inductively Coupled Argon Plasma Emission Spectroscopy (ICAP) as defined in USEPA Method 29) or USEPA (1986) Method 7910 (for vanadium only) or USEPA (1986) Method 7911 (for vanadium only) (as appropriate)), TM-14 (USEPA (2000) Method 29), TM-15 (AS (1995) Stationary source emissions method 2 determination of total particulate matter isokinetic manual sampling gravimetric method), TM-22 (USEPA (2000) Method 4), TM- 23 (USEPA (2000) Method 3) and TM-34 (USEPA (2000) Method 18 or USEPA (2000) Method 25 or 25A or 25B or 25C or 25D or 25E (as appropriate)) as specified within DECCW, 2007, Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales. The above standards should be specified when commissioning third-party stack testing to demonstrate compliance against the criteria specified within Section 2.4. BHO ENV PRM

16 4.0 Monitoring Locations And Protocol 4.1 Monitoring Equipment And Locations The air quality monitoring network comprises seven dust deposition gauges, three high volume air samplers (of which one monitors for TSP and Lead (Pb) and two monitor for PM 10 and Pb), and two TEOM monitors. The location of the monitoring sites are described in Table 6 and shown on Figure 1. Table 6: Summary of Monitoring Locations Site Number DG1 DG2 DG3 Site Description Located within the grounds of the RSPCA Centre. Potentially impacted by local exposed areas. Located in the grounds of residential property, Honeys Hill Located at Thompson s Shaft. Potentially impacted by local exposed areas. DG4 Located adjacent to uninhabited property ( Number 1 Residence ) adjacent to Browne s Shaft. Dust gauge was relocated by <10m in June 2010 to remove potential impacts from adjacent vegetation. DG5 DG6 DG7 TSP- HVAS PM10- HVAS1 PM10- HVAS2 Co-located with TSP-HVAS1 and PM10-HVAS1 at the CML7 Silver Tank monitoring site. Monitoring location potentially impacted by haul truck movements and wind erosion of on-site materials including free areas. Co-located with TEOM2 and PM10-HVAS2 at the (uninhabited) BHP House monitoring site. Monitoring location selected to evaluate impacts associated with activities in the vicinity of the Rasp Mine processing area. Located at a representative receptor location within Department of Health s Lead Risk Zone 1 (western end, southern side of Eyre Street) Co-located with DDG5 and PM10-HVAS1 at the CML7 Silver Tank monitoring site. Monitoring location potentially impacted by haul truck movements and wind erosion of on-site materials including free areas. Co-located with TSP-HVAS and PM10-HVAS1 at the CML7 Silver Tank monitoring site. Monitoring location potentially impacted by haul truck movements and wind erosion of on-site materials including free areas. Co-located with TEOM2 and DDG5 at the (uninhabited) BHP House monitoring site. Monitoring location selected to evaluate impacts associated with activities in the vicinity of the Rasp Mine processing area. Easting (MGA54) Northing (MGA54) TBC TBC TBC TBC TBC TBC BHO ENV PRM

17 TEOM1 TEOM2 Located within the perimeter fence of Western Water s water tower facility. Location selected to evaluate impacts associated with management of the TSF. Co-located with PM10-HVAS2 and DDG5 at the (uninhabited) BHP House monitoring site. Monitoring location selected to evaluate impacts associated with activities in the vicinity of the Rasp Mine processing area TBC TBC Figure 1: Location of Ambient Air Quality and Meteorological Monitoring Sites associated with Rasp Mine Notes: Coordinates shown in MGA54 Datum Refer to Table 6 for Site Numbers / Descriptors DG7 not shown as location TBC Generally, monitoring locations have been selected to be representative of areas of higher predicted impacts, as evaluated within the Air Quality Assessment prepared for the Environment Assessment (ENVIRON 2010). The location of air quality monitoring sites relative to air quality assessment impact predictions is provided within Appendix B. BHO ENV PRM

18 4.2 Air Quality Monitoring Locations and Network Log The Rasp Mine air quality and meteorological monitoring program is detailed in Table 7. A summary description of the location and monitoring requirements for each location is provided within the Air Quality Monitoring Network Log included as Appendix C. Table 7: Rasp Mine Ambient Air Quality and Meteorological Monitoring Program Site No. Parameters Monitored Units of Measure Averaging period Sampling DECCW Sampling method DG1 Insoluble solids, Pb g/m²/month monthly, annual monthly AM-19 DG2 insoluble solids, Pb g/m²/month monthly, annual monthly AM-19 DG3 insoluble solids, Pb g/m²/month monthly, annual monthly AM-19 DG4 insoluble solids, Pb g/m²/month monthly, annual monthly AM-19 DG5 insoluble solids, Pb g/m²/month monthly, annual monthly AM-19 DG6 insoluble solids, Pb g/m²/month monthly, annual monthly AM-19 DG7 insoluble solids, Pb g/m²/month monthly, annual monthly AM-19 TSP-HVAS TSP, Pb µg/m³ annual 24 hours, every 6 days AM-11, AM- 15 PM10-HVAS1 PM 10, Pb µg/m³ 24 hour, annual 24 hours, every 6 days AM-11, AM- 18 PM10-HVAS2 PM 10, Pb µg/m³ 24 hour, annual 24 hours, every 6 days AM-11, AM- 18 TEOM1 PM 10, Wind Speed / µg/m³ 24 hour, annual 24 hours, continuous AM-22 Direction TEOM2 PM 10, Wind Speed / µg/m³ 24 hour, annual 24 hours, continuous AM-22 AWS Direction Meteorological Parameters Temperature (2m and 10m), wind speed / direction, rainfall, sigma theta, solar radiation 15-minute Continuous AM-2, AM Meteorological Monitoring Meteorological monitoring is conducted using the Rasp Mine Automatic Weather Station (AWS). This monitor records the following parameters, at 15-minute intervals: Wind speed; Wind direction; Sigma theta (standard deviation of the wind direction); Temperature (at 2m and 10m); Solar radiation and Rainfall. Monitoring equipment will undergo laboratory calibration at a minimum frequency of once every two years to ensure that all sensors are correctly operating. To ensure BHO ENV PRM

19 that no data capture is lost, a short-term replacement sensor(s) (e.g. all-in-one Lufft WS600 Sensor) shall be deployed during laboratory calibration. 4.4 Overview of Wind Patterns To obtain long term information for wind pattern data reference has been made to the Bureau of Meteorology (BoM) AWS located at Broken Hill Airport (station number ). Given the siting of the Broken Hill Airport AWS, in particular a dominance of hard, flat surfaces, measured wind speeds are likely to be greater than those representative of the Rasp Mine. Annual and Seasonal wind roses for the Broken Hill Airport AWS are provided in Figure 2. Annual wind patterns are comparable between years, with a dominance of moderate to strong winds (3 m/s to greater than 10.5 m/s) from the southerly quadrant. All seasons are dominated by a southerly to northerly flow, with the exception of winter in 2009 which experienced a defined west to north flow. Comparison with previous year s seasonal wind roses indicates that a southerly flow is also typical in winter. BHO ENV PRM

20 N N WNW W WSW NW NNW NNE NE ENE 0% 4% 8% 12% 16% ESE E WNW W WSW NNW Wind Speed (m/s) NW >0-0.5 > >1.5-3 >3-5.5 >5.5-8 > >10.5 NNE NE 0% 10% 20% WNW W WSW ENE ESE E SW SE SW SE SSW SSE SSW SSE S S ANNUAL - Calms 4.3% SUMMER - Calms 2.6% NNW N NNE NNW N N NNE NW NE NW NE WNW ENE WNW ENE W E W E 0% 10% 20% 0% 4% 8% 12% 16% 20% WSW ESE WSW ESE SW SE SW SE SSW S SSE SSW S SSE SUMMER - Calms 2.6% AUTUMN - Calms 5.7% NNW N NNE NNW N NNE NW NE NW NE WNW ENE WNW ENE W E W E 0% 4% 8% 12% 16% 0% 4% 8% 12% WSW ESE WSW ESE SW SE SW SE SSW S SSE SSW S SSE WINTER - Calms 6.0% SPRING - Calms 2.7% Figure 2: Annual and seasonal wind roses for Broken Hill Airport AWS (2009) 4.5 Real Time Particulate Monitoring for Operational Dust Management Tapered Element Oscillating Microbalances (TEOMs) will be used as a real-time measure for operational dust management at the site. The Rasp Mine TEOM sites will BHO ENV PRM

21 be configured to send an alert SMS message to the accountable staff (Environmental Coordinator and Mill Operator) when PM 10 concentrations exceed either the Investigation and/or Action Level. The recorded concentration, averaging period, TEOM identifier, wind speed and direction will be reported within the alert message. Investigation Level An Investigation Level has been established for the Rasp Mine. At this Level the Mill Operator will notify the Environment Coordinator and attempts to identify the contributing source of emissions will be made. Contributing sources can be identified through the review of corresponding meteorological and air quality data (wind speed, wind direction, diurnal trends, pollution roses) and a knowledge of current Rasp Mine site activities. Interim Investigation Level for PM 10 concentrations is 100 μg/m 3, expressed as a 3- hour rolling average. This will be reviewed during the first year of operations and amended as appropriate. Calm conditions and recirculation events may lead to the Rasp Mine significantly contributing to exceedances of the Investigation Level. For this reason, the wind direction is not built into the Investigation Level criterion. However, the wind speed and direction will also be reported when the alarm is triggered to inform site personnel. If the Investigation Level continues to be exceeded in the following hour, and Rasp Mine sources have been identified as being significant contributors, appropriate dust mitigation measures (use of chemical / water suppression / varying or ceasing operations) will be applied. Action Level An Action Level has been established to alert site personnel that immediate dust mitigation measures are required or the cessation of dust generating activities will be applied immediately. When short-term PM 10 concentrations are recorded at or above 300 μg/m 3, expressed as a 15-minute average (Interim Action Level) and meteorological conditions suggest that the Rasp Mine may be the dominant contributor. This will be reviewed during the first year of operations and amended as appropriate. The use of real-time monitoring for operational dust management is documented in the Procedure - Real Time Particulate Monitoring for Operational Dust Management. 4.6 Point Source Monitoring Post-commissioning stack testing shall be conducted at both the ventilation shaft and crusher circuit baghouse stack to establish compliance with the criteria set out in in Table 5 and Table 6. If post-commissioning stack testing of the ventilation shaft does not easily satisfy the above criteria (i.e. if the ventilation shaft is not a wet shaft, as is expected) water sprays will be installed and used during blasts to maximise suppression of dust in the underground mine. BHO ENV PRM

22 Subsequent to post-commissioning stack testing, stack testing will be conducted on a quarterly frequency for the first year of operations. This frequency will be reviewed following a full twelve months of monitoring, with the frequency reduced if compliance is consistently met. All stack testing shall be conducted by a suitably qualified, NATA-accredited stack testing consultant, and will be conducted consistent with the relevant standards documented in Section Meteorological Forecasting for Operational Dust Management A review of the emissions inventory and atmospheric dispersion modelling conducted for the Rasp Mine Environmental Assessment (ENVIRON 2010) indicates that the principal meteorological factor that may lead to adverse impacts beyond the site boundary relates to the presence of high winds. Principally, this is likely to increase particulate emissions associated with wind erodible area sources such as the existing free areas, the ROM stockpile and TSF1. Details of wind conditions will be provided at the morning shift meeting and posted on the information board and any additional mitigation measures (e.g. additional chemical dust suppressant / watering to the TSF) will be discussed and put in place in advance of adverse weather conditions. 4.8 Lead in Soil Monitoring BHOP have made a commitment to evaluate soil lead concentrations through 6- monthly monitoring of trends in lead concentration at selected locations within the vicinity of the mining lease. The following locations have been identified as suitable for ongoing, 6-monthly monitoring of lead in soil (coordinates in MGA54 datum): Vacant block in Eyre Street - south E543776, N Vacant block in Eyre Street north E544260, N And adjacent to centre of TSF1 E544267, N A standard soil sample will be conducted at each location on a 6-monthly basis. Samples will be analysed by a NATA accredited laboratory for lead concentration. BHO ENV PRM

23 5.0 Reporting All monitoring records are kept in accordance with the Rasp Mine s EPL conditions: In a in a legible form, or in a form that can readily be reduced to a legible form; kept for at least 4 years after the monitoring or event to which they relate took place; and produced in a legible form to any authorised officer of the EPA who asks to see them. The following records will also be kept in respect of air quality monitoring undertaken: the date(s) on which the sample was taken; the time(s) at which the sample was collected; the point at which the sample was taken; and the name of the person who collected the sample. 5.1 Incident Reporting Condition 5 of Schedule 4 of Development Consent MP 07_0018 states: 5. The Proponent shall notify the Director-General and any other relevant agencies of any incident associated with the project as soon as practicable after the Proponent becomes aware of the incident. Within seven days of the date of the incident, the Proponent shall provide the Director-General and any relevant agencies with a detailed report on the incident. In terms of air quality monitoring, an incident is defined as any exceedence of the air quality criteria are summarised in Table 2, Table 3, Table 4, Table 5 and Table 6 of this document. Notification of such air quality monitoring incidents should be provided to the Director- General of the Department of Planning and to the operations staff of the local DECCW office. Notification is to include all contextual information relevant to the incident, such as prevailing meteorological conditions, extraordinary events (e.g. bushfires, prescribed burning, dust storms, fire incidents, illegal activities), as well as site activities and preventative action undertaken (if applicable) during the incident. Incident reporting should additionally contain information on diurnal trends and pollution roses (a graphical representation of wind direction plotted against concurrent particulate concentration, similar to a wind rose), as applicable. 5.2 Regular Reporting Air quality monitoring results will be reported by the Environment Coordinator for: Weekly Head of Departments Meeting CBH Website Annual Return and Annual Environment Management Report Annual DoP Report BHO ENV PRM

24 An environment performance review shall be conducted annually and provided to the DoP. These review reports shall commence at the end of June 2012 then annually thereafter. If possible this report should be combined with AEMR. This review will: (b) include a comprehensive review of the monitoring results and complaints records of the project over the past year, which includes a comparison of these results against the: relevant statutory requirements, limits or performance measures /criteria; monitoring results of previous years; and relevant predictions from the air quality assessments for the Environment Assessment and the Preferred Project Report; (b) (c) identify any non-compliance over the past year, and describe what actions were (or are being) taken to ensure compliance; and identify any trends in the monitoring data over the life of the project. 5.3 Monitoring Data Screening, Analysis and Storage The following procedures are provided with regard to TEOM data, for quality control / quality assurance: Data that is <5 µg/m 3 is deemed invalid and excluded from the data set; Data that is greater than 500 µg/m 3 is flagged as an exception; Data with a status code other than OK is flagged as an exeption; Data where the variance from one result to the next is >100 µg/m 3 is flagged as an exception; If any one of these rules are not met then the period average (i.e. 24 hours) is recalculated; If less than 75% of data is valid then the period result is deemed invalid. The above rules will be applied by the Environment Coordinator who will generate exception reports as required. All data shall be stored in a central database that is regularly backed up. The database will be configured to permit the viewing of data as a continuous data set. Two parallel data sets will be maintained; one that preserves raw data in its original form and the other that has been quality assured and is available for further analysis. Raw data can then be revisited and re-analysed if any problems arise with the original quality assurance process. 5.4 Non-Routine Operations Log A log shall be kept of non-routine mine operations which may impact air quality levels (e.g. earthworks), and local and regional incidences (e.g. bush fires, control burns, dust storms, dust events at neighbouring mines) that may affect air quality levels. The log will assist in data analysis and interpretation. BHO ENV PRM

25 6.0 Auditing And Review 6.1 Air Quality Monitoring Program Review Consistent with the requirements of Condition 4 of Schedule 4 of Development Consent MP 07_0018, this Air Quality Monitoring Program shall be reviewed, and if necessary revised, within three months of submission of: an Annual Review; an Incident Report (refer Section 5.1); an Audit Report (refer Section 6.2); or any modification of the Development Consent Conditions. Any review shall reflect changes in environmental expectations, technology and operational procedures as well operational experience gained as mining progresses. 6.2 Independent Environmental Audit An independent audit of the project will be conducted every three years with the first review to be undertaken in December Arrangement for the independent audit to be conducted will be the responsibility of the Environmental Coordinator. BHO ENV PRM

26 7.0 Accountability The relevant Rasp Mine personnel accountabilities for the implementation of this Air Quality Monitoring Program are provided in Table 8. Table 8: Accountabilities for the Air Quality Monitoring Program Position Mine Manager Department Managers Environmental Coordinator Operators Responsibility Provide adequate resources to assist the implementation of the Monitoring Program. Provide adequate resources to assist the implementation of the Monitoring Program. Allocate responsibilities to implement all actions within the Monitoring Program. Support actions to mitigate or cease dust generation activities as determined from an Investigation Level or Action Level. Provide training and maintain competencies to enable the implementation of the Monitoring Program. Provide and maintain the Monitoring Program; Assist in the identification of causes of PM 10 Investigation Level being exceeded upon SMS notification; Assist in identifying appropriate dust mitigation actions are conducted upon SMS notification that PM 10 Action Level has been exceeded; Undertake a review of air quality monitoring results on a monthly basis; Provide monitoring results for the Heads of Department Meetings, CBH website, to the AEMR and to the DoP; and Report any exceedances for which the Rasp Mine is responsible to the Director-General - DoP and DECCW. Arrange independent audits. Maintain operations so as to minimise the generation of dust. Identify and take actions to mitigate or cease dust generation activities as determined from an Investigation Level or Action Level. Undertake training as appropriate to maintain air quality related competencies. BHO ENV PRM

27 8.0 Procedures The Monitoring Program is to be read in conjunction with the following Rasp Mine procedures relevant to air quality monitoring: Procedure - Real-Time Particulate Monitoring for Operational Dust Management Procedure - TEOM Monitoring Procedure - Dust Deposition Gauge Monitoring Procedure - TSP and PM 10 High Volume Air Sampling Procedure - Meteorological Monitoring Procedure - Meteorological Forecasting to Guide Dust Management BHO ENV PRM

28 9.0 References AS Ambient air - Determination of particulate lead - High volume sampler gravimetric collection - Flame atomic absorption spectrometric method. AS Ambient Air - Guide for the Siting of Sampling Units. AS Methods for Sampling and Analysis of Ambient Air - Determination of Particulates - Deposited Matter - Gravimetric Method. AS/NZS :2003 Methods for sampling and analysis of ambient air - Determination of suspended particulate matter - Total suspended particulate matter (TSP) - High volume sampler gravimetric method AS/NZS Methods for sampling and analysis of ambient air Determination of suspended particulate matter PM 10 high volume sampler with size selective inlet Gravimetric Method. DR AS Methods for sampling and analysis of ambient air - Meteorological monitoring for ambient air quality monitoring applications Hourly observations for 2009 from the Bureau of Meteorology Automatic Weather Station at Broken Hill Airport. National Environmental Protection Council (1998) National Environmental Protection Measure for Ambient Air Quality. National Health and Medical Research Council, 92nd Session, (1981). AMMAAP (2005) NSW Department of Environment, Climate Change and Water, Approved Methods for the Modelling and Assessment of Air Pollutants in New South Wales. NSW Department of Environment, Climate Change and Water (2007), Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales. BHO ENV PRM

29 Appendix A Development Consent BHO ENV PRM

30 Appendix A1: Rasp Mine Development Consent MP 07_0018 Air Quality Conditions Condition Number Condition Title Condition Detail Section of Program The Proponent shall ensure that all reasonable and feasible avoidance and mitigation measures are employed so that particulate matter emissions generated by the project do not cause an exceedance of the criteria listed in Tables 1, 2 or 3 at any residence on privately-owned land. Table 1: Long Term Criteria for Particulate Matter Pollutant Total solid particles (TSP) Particulate matter < 10 µm (PM 10 ) Averaging Period Annual Annual d Criterion a 90 µg/m 3 a 30 µg/m 3 Table 2: Short Term Criterion for Particulate Matter Pollutant Averaging Period d Criterion Sch3, 3 Air Quality Criteria Particulate matter < 10 µm (PM 10 ) 24 hour a 50 µg/m 3 Section 2.3 Table 3: Long Term Criteria for Deposited Dust Pollutant Averaging Period Maximum Project Contribution Maximum Total Deposited Dust Level c Deposited dust Annual b 2 g/m 2 /month a 4 g/m 2 /month Notes to Tables 1 3: a Total impact (i.e. incremental increase in concentrations due to the project plus background concentrations due to all other sources); b Incremental impact (i.e. incremental increase in concentrations due to the project on its own); 30

31 Condition Number Condition Title Condition Detail Section of Program c Deposited dust is to be assessed as insoluble solids as defined by Standards Australia, AS/NZS :2003: Methods for Sampling and Analysis of Ambient Air - Determination of Particulate Matter - Deposited Matter - Gravimetric Method; d Excludes extraordinary events such as bushfires, prescribed burning, dust storms, fire incidents, illegal activities or any other activity agreed by the Director-General in consultation with DECCW. The Proponent shall ensure that the project is operated in a manner that does not exceed the criteria listed in Tables 4 and 5. Table 4: Discharge Criteria for Point 1 Ventilation Shaft (Little Kintore Pit) Pollutant Units of Measure Concentration Limit Oxides of nitrogen (as NO 2 ) Milligrams per cubic metre 350 Total solid particles (TSP) Milligrams per cubic metre 20 Sch3, 4 Air Quality Criteria a Type 1 and Type 2 substances Milligrams per cubic metre 1 Section 4.6 Volatile organic compounds (as n- propane) Milligrams per cubic metre 40 Table 5: Discharge Criteria for Point 2 Process Enclosure/ Baghouse Stack Pollutant Units of Measure Concentration Limit Total solid particles (TSP) a Type 1 and Type 2 substances Milligrams per cubic metre Milligrams per cubic metre b TBD b TBD 31

32 Condition Number Condition Title Condition Detail Section of Program Notes to Tables 4 5: a Total of Sb, As, Cd, Pb, Hg, Be, Cr, Co, Mn, Ni, Se, Sn and V; b TBD means that the limit must be proposed by the Proponent and agreed by the Director-General in consultation with DECCW and be based on the results of post-commissioning test results. The limit must be proposed prior to the second sampling occurrence at Point 2; and reference conditions for the limits in Tables 4 and 5 are: dry, 273K and kpa. The Proponent shall: Sch3, 5 Dust Mitigation Measures (a) (b) (c) Implement best practice dust management, including all reasonable and feasible measures to minimise dust emissions, including point source and fugitive emissions; minimise any visible off-site dust generated by the project or the site; and regularly assess real-time air quality monitoring and meteorological forecasting data and relocate, modify and/ or suspend operations to ensure compliance with the relevant conditions of this approval, Section 4.5 Air Quality Management Plan Sections 10, and to the satisfaction of the Director-General. The Proponent shall prepare and implement a detailed Air Quality Management Plan for the project to the satisfaction of the Director-General. This plan must: (a) be prepared in consultation with DECCW and submitted to the Director-General for approval prior to the commencement of construction on the site; Sch.3, 11 Air Quality Management Plan (b) (c) identify all major sources of particulates and other air pollutants that may be emitted from the project, being both point source and diffuse emissions, including identification of the potential for lead contamination to be carried by these particulates; include an air quality monitoring program that: Section 4.0 Air Quality Management Plan provides for periodic point source monitoring at Point 1 (Ventilation Shaft Little Kintore Pit) and Point 2 (Process Enclosure/ Baghouse Stack); provides for continuous ambient monitoring across an ambient air quality and dust monitoring network comprising no fewer than ten monitoring locations 32

33 Condition Number Condition Title Condition Detail Section of Program (d) (e) (f) (g) (h) (i) (j) (k) (Points 3 to 12) for total suspended particulates, PM 10, lead and dust deposition. Monitoring locations shall be informed by the outcomes of the air quality assessments presented in the EA and PPR and identified in consultation with DECCW; and provides for continuous meteorological monitoring using a meteorological monitoring station located on the site; is consistent with the requirements of Approved Methods for the Sampling and Analysis of Air Pollutants in New South Wales (DECC, 2007), the Protection of the Environment Operations Act 1997 and the Protection of the Environment (Clean Air) Regulation pro-active and reactive management and response mechanisms for particulates with specific reference to measures to be implemented and actions to be taken to minimise and prevent potential elevated air quality impacts (including ambient air and deposited dust impacts) on surrounding land uses as a consequence of meteorological conditions, upsets within the project, or the mode of operation of the project at any time; procedures and processes for monitoring ambient dust and deposited dust impacts; provision for regular review of dust monitoring data, with comparison of monitoring data with that assumed and predicted in the documents referred to under Condition 2 of Schedule 3; details of measures to be implemented to address any situation in which monitored dust impacts exceed those assumed and predicted in the documents referred to under Condition 2 of Schedule 3; specific complaints management procedures in the event that dust monitoring indicates elevated off-site impacts; procedures for the minimisation of dust generation on the site; protocols for regular maintenance of plant and equipment to minimise the potential for elevated dust generation, leaks and fugitive emissions; and a contingency plan should an incident, upset or other initiating factor lead to elevated dust impacts, whether above normal operating conditions or above environmental performance goals/ limits. 33

34 Appendix A2: Rasp Mine Development Consent DA169/96 Relevant Environmental Management, Auditing and Reporting Conditions Condition Number Condition Title Condition Detail Section of Plan By the end of June 2012, and annually thereafter, the Proponent shall review the environmental performance of the project to the satisfaction of the Director-General. This review must: (a) describe the development (including any rehabilitation) that was carried out in the past year, and the development that is proposed to be carried out over the next year; (b) include a comprehensive review of the monitoring results and complaints records of the project over the past year, which includes a comparison of these results against the: relevant statutory requirements, limits or performance measures/criteria; Sch.4, 3 Annual Review monitoring results of previous years; and relevant predictions in the documents referred to in Conditions 2 of Schedule 2; Section 6.1 (c) identify any non-compliance over the past year, and describe what actions were (or are being) taken to ensure compliance; (d) identify any trends in the monitoring data over the life of the project; (e) identify any discrepancies between the predicted and actual impacts of the project, and analyse the potential cause of any significant discrepancies; and (f) describe what measure will be implemented over the next year to improve the environmental performance of the project. 34

35 Condition Number Condition Title Condition Detail Section of Plan Within three months of: (a) the submission of an annual review under Condition 3 above; (b) the submission of an incident report under Condition 5 below; Sch.4, 4 Revision of Strategies, Plans & Programs (c) (d) the submission of an audit report under Condition 7 below, or any modification of the conditions of this approval (unless the conditions require otherwise), Section 6.1 the Proponent shall review, and if necessary revise, the strategies, plans, and programs required under this approval to the satisfaction of the Director-General. Note: This is to ensure the strategies, plans and programs are updated on a regular basis, and incorporate any recommended measures to improve the environmental performance of the project. Sch.4, 5 Incident Reporting The Proponent shall notify the Director-General and any other relevant agencies of any incident associated with the project as soon as practicable after the Proponent becomes aware of the incident. Within seven days of the date of the incident, the Proponent shall provide the Director- General and any relevant agencies with a detailed report on the incident. Section 5.1 Sch.4, 6 Regular Reporting The Proponent shall provide regular reporting on the environmental performance of the project on its website, in accordance with the reporting arrangements in any approved plans or programs of the conditions of this approval. Section

36 Condition Number Condition Title Condition Detail Section of Plan By the end of December 2011, and every three years thereafter, unless the Director-General directs otherwise, the Proponent shall commission and pay the full cost of an Independent Environmental Audit of the project. This audit must: (a) be conducted by suitably qualified, experienced and independent team of experts whose appointment has been endorsed by the Director-General; (b) include consultation with the relevant agencies; Sch.4, 7 Independent Environmental Audit (c) assess the environmental performance of the project and whether it is complying with the relevant requirements in this approval and any relevant EPL or Mining Lease (including any assessment, plan or program required under these approvals); Section 6.2 (d) review the adequacy of any approved strategies, plans or programs required under these approvals; and, if appropriate (e) recommend measures or actions to improve the environmental performance of the project, and/or any strategy, plan or program required under these approvals. Note: This audit team must be led by a suitably qualified auditor and include experts in any fields specified by the Director- General. Sch.4, 8 Independent Environmental Audit Within six weeks of the completing of this audit, or as otherwise agreed by the Director-General, the Proponent shall submit a copy of the audit report to the Director-General, together with its response to any recommendations contained in the audit report. Section

37 Condition Number Condition Title Condition Detail Section of Plan From the end of March 2011, the Proponent shall: (a) make copies of the following publicly available on its website: the documents referred to in Condition 2 of Schedule 2; all current statutory approvals for the project; all approved strategies, plans and programs required under the conditions of this approval; Sch.4, 9 Access to Information the monitoring results of the project, reported in accordance with the specifications in any conditions of this approval, or any approved plans or programs; a complaints register, updated on a monthly basis; Section 5 the annual reviews of the project; any independent environmental audit of the project, and the Proponent s response to the recommendations in any audit; and any other matter required by the Director-General; (b) keep this information up-to-date, to the satisfaction of the Director-General. 37

38 Appendix B Location of Air Quality Monitoring Relative to Air Quality Assessment Impact Predictions 38

39 24-Hour PM 10 Predictions 39

40 Annual PM 10 Predictions 40

41 Dust Deposition Predictions 41

42 Annual Lead Concentration Predictions 42

43 Appendix C Air Quality Monitoring Network Log 43

44 This Air Quality Monitoring Network Log outlines specific monitoring details for each monitoring site. Site Number: DG1 Instrument Type MGA54 Coordinates Dust Deposition Gauge Easting Northing Parameters Insoluble solids, Monitored Lead Units of g/m²/month Measure Averaging monthly, annual period Sampling Monthly DECCW AM-19, Sampling % Pb method Location On-site Classification Commissioning March 2007 Date Reporting Monthly Auditing Annual Station Located adjacent to the RSPCA and St Johns Training Centres. Potentially impacted by Description local exposed areas. Located on CML7, off BHOP surface area. Monitoring Compliance, EP Licence Long-term temporal trend analysis. Objective 44

45 Site Number: DG2 Instrument Type MGA54 Coordinates Dust Deposition Gauge Easting Northing Parameters Insoluble solids, Monitored Lead Units of g/m²/month Measure Averaging monthly, annual period Sampling monthly DECCW AM-19, Sampling % Pb method Location Residential Classification Commissioning March 2007 Date Reporting Monthly Auditing Annual Station Located at Honeys Hill. Located on CML7, BHOP surface area. Description Monitoring Compliance, EP Licnece Long-term temporal trend analysis. Objective 45

46 Site Number: DG3 Instrument Type MGA54 Coordinates Dust Deposition Gauge Easting Northing Parameters Insoluble solids, Lead Monitored Units of g/m²/month Measure Averaging monthly, annual period Sampling monthly DECCW AM-19, Sampling % Pb method Location On-site Classification Commissioning March 2007 Date Reporting Monthly Auditing Annual Station Located at Thompson s Shaft. Potentially impacted by local exposed areas.. Located Description on CML7, BHOP surface area. Monitoring Compliance, EP Licence Long-term temporal trend analysis. Objective 46

47 Site Number: DG4 Instrument Type MGA54 Coordinates Parameters Monitored Units of Measure Averaging period Sampling DECCW Sampling method Location Classification Commissioning Date Reporting Auditing Station Description Monitoring Objective Dust Deposition Gauge Easting Northing Insoluble solids, Lead g/m²/month monthly, annual monthly AM-19, % Pb Residential March 2007 Monthly Annual Located adjacent to Number 1 Residence adjacent to Browne s Shaft. Located on CML7, BHOP surface area.dust gauge was relocated by <10m in June 2010 to remove potential impacts from adjacent vegetation. Compliance, EP Licence Long-term temporal trend analysis. 47

48 Site Number: DG5 Instrument Type MGA54 Coordinates Parameters Monitored Units of Measure Averaging period Sampling DECCW Sampling method Location Classification Commissioning Date Reporting Auditing Station Description Monitoring Objective Dust Deposition Gauge Easting Northing Insoluble solids, Lead g/m²/month monthly, annual monthly AM-19, % Pb On-site December 2009 Monthly Annual Co-located with TSP-HVS1 and PM10-HVS2 at the CML7 Silver Tank monitoring site. Monitoring location potentially impacted by haul truck movements and wind erosion of onsite materials including free areas. Located on CML7, BHOP surface area. Long-term temporal trend analysis. 48

49 Site Number: DG6 Instrument Type MGA54 Coordinates Parameters Monitored Units of Measure Averaging period Sampling DECCW Sampling method Location Classification Commissioning Date Reporting Auditing Dust Deposition Gauge Easting Northing Insoluble solids, Lead g/m²/month monthly, annual monthly AM-19, % Pb Residential TBA Monthly Annual Station Description Monitoring Objective Co-located with TEOM2 and PM10-HVS2 adjacent to BHP House. Located on CML7, BHOP surface area. Monitoring location selected to evaluate impacts associated with activities in the vicinity of the Rasp Mine processing area. Compliance, EP Licence

50 Site Number: DG7 Instrument Type MGA54 Coordinates Parameters Monitored Units of Measure Averaging period Sampling DECCW Sampling method Location Classification Commissioning Date Reporting Auditing Station Description Monitoring Objective Dust Deposition Gauge Easting Northing TBC TBC Insoluble solids, Lead g/m²/month monthly, annual monthly AM-19, % Pb Residential TBA Monthly Annual Located at a representative receptor location within Department of Health s Lead Risk Zone 1 (western end, southern side of Eyre Street). Located off CML7. Compliance, EP Licence Input into future Health Risk Assessment (evaluation of lead deposition within Risk Zone 1 during the operational phase). 50

51 Site Number: TSP-HVAS Instrument Type MGA54 Coordinates Parameters Monitored High Volume Air Sampler with TSP Sampling Head Easting Northing Total Suspended Particulate, Lead on filter paper µg/m 3 Units of Measure Averaging 24-hours, Annual period Sampling 24-hours, 1-day-in-6 DECCW AM-11 (Pb), Sampling AM-15 (TSP) method Location On-site Classification Commissioning May 2007 Date Reporting Monthly Auditing Annual Station Description Monitoring Objective Co-located with DG5 and HVS2 at the CML7 Silver Tank monitoring site. Monitoring location potentially impacted by haul truck movements and wind erosion of on-site materials including free areas. Located on CML7, BHOP surface area. Compliance, EP Licence Long-term temporal trend analysis. Evaluation of Pb content within different Particle Sizes. 51

52 Site Number: PM10-HVAS1 Instrument Type MGA54 Coordinates High Volume Air Sampler with PM 10 Size Selective Inlet Easting Northing Parameters PM 10, Lead on Monitored filter paper Units of µg/m 3 Measure Averaging 24-hours, Annual period Sampling 24-hours, 1-day-in-6 DECCW AM-11 (Pb), Sampling AM-18 (PM 10 ) method Location On-site Classification Commissioning May 2010 Date Reporting Monthly Auditing Annual Station Co-located with HVS1 and DG5 at the CML7 Silver Tank monitoring site. Monitoring Description location potentially impacted by haul truck movements and wind erosion of on-site materials including free areas. Located on CML7, BHOP surface area. Monitoring Objective Long-term temporal trend analysis. Evaluation of Pb content within different Particle Sizes. 52

53 Site Number: PM10-HVAS2 Instrument Type MGA54 Coordinates Parameters Monitored Units of Measure Averaging period Sampling DECCW Sampling method Location Classification Commissioning Date Reporting Auditing Station Description Monitoring Objective High Volume Air Sampler with PM 10 Size Selective Inlet Easting Northing PM 10, Lead on filter paper µg/m 3 24-hours, Annual 24-hours, 1-day-in-6 AM-11 (Pb), AM-18 (PM 10 ) Residential TBA Monthly Annual Co-located with TEOM2 and DG6 adjacent to BHP House. Located on CML7, BHOP surface area. Monitoring location selected to evaluate impacts associated with activities in the vicinity of the Rasp Mine processing area. Compliance, EP Licence. Evaluation of Lead content in PM 10 size fraction. Calibration against AM-22 Sampling Method. 53

54 Site Number: TEOM1 Instrument Type Tapered Element Oscillating Microbalance (TEOM) with PM 10 Size Selective Inlet Easting Northing MGA54 Coordinates Parameters PM 10, Wind Monitored Speed / Direction Units of µg/m 3 Measure Averaging 24-hours, Annual period Sampling Continuous DECCW AM-22 Sampling method Location Commercial Classification Commissioning TBA Date Reporting Monthly Auditing Annual Station Located within the perimeter fence of Western Water s water tower facility. Location Description selected to evaluate impacts associated with management of the TSF. Located off CML7. Monitoring Compliance, EP Licence Operational Dust Management. Upwind/Downwind Objective Contribution Evaluation. 54

55 Site Number: TEOM2 Instrument Type MGA54 Coordinates Tapered Element Oscillating Microbalance (TEOM) with PM 10 Size Selective Inlet Easting Northing Parameters PM 10, Wind Monitored Speed / Direction Units of µg/m 3 Measure Averaging 24-hours, Annual period Sampling Continuous DECCW AM-22 Sampling method Location Residential Classification Commissioning TBA Date Reporting Monthly Auditing Annual Station Description Monitoring Objective Co-located with HVS3 and DG6 adjacent BHP House. Located on CML7, BHOP surface area. Monitoring location selected to evaluate impacts associated with activities in the vicinity of the Rasp Mine processing area. Complianc, EP Licence Operational Dust Management. Upwind/Downwind Contribution Evaluation. 55

56 Site Number: AWS Instrument Type MGA54 Coordinates Parameters Monitored Units of Measure Averaging period Sampling DECCW Sampling method Location Classification Commissioning Date Reporting Auditing Automatic Weather Station Easting Northing Meteorological Parameters Temperature (2m and 10m), wind speed / direction, rainfall, sigma theta, solar radiation 15-Minutes Continuous AM-2, AM-4 On-site May 2007 Monthly Annual Station Description Monitoring Objective On-site meteorological monitoring site located North East of Little Kintore Pit. Compliance, EP Licence Site-representative meteorological monitoring. Parameter Units of Measure Averaging Period Sampling Method Temperature at 2 metres Degrees Celcius Continuous 15-minute AM-4 Temperate at 10 metres Degrees Celcius Continuous 15-minute AM-4 Wind speed at 10 metres Metres per second Continuous 15-minute AM-2 and AM-4 Wind direction at 10 metres Degrees Continuous 15-minute AM-2 and AM-4 Sigma theta at 10 metres Degrees Continuous 15-minute AM-2 and AM-4 Solar radiation Watts per square metre Continuous 15-minute AM-4 56

57 Appendix D Baseline Air Quality Monitoring Data 57

58 The assessment of compliance with ambient air quality limits necessitates the characterisation of baseline air quality in the absence of the Rasp Mine operations. Broken Hill is located in an arid climate, frequently impacted by dust storms. Additionally, there are several existing sources of both particulate matter and heavy metals (e.g. CML7 free areas ). Air quality monitoring for compliance purposes should take account of the Broken Hill locality and should, where necessary, make reference to the following baseline air quality data. The following information was originally compiled within the Air Quality Assessment for the Rasp Mine (ENVIRON document reference 1150_BHOP Rasp Air_Rev1_26May2010). 9.1 D1 Existing Local Sources of Atmospheric Emissions Industrial and mining activities operating within 5 km of the Project Area which are listed as either National Pollutant Inventory (NPI) reporting activities or DECCW licence holders are listed in Table D1. Table D1 Industrial operations and mines situated within 5 km of the Project Area Facility Name Distance from Site Description Perilya Broken Hill Operations Pty Ltd South and North Mines Operations located adjacent to northeast and southwest site boundaries Zinc, lead and silver mines Bemax Mineral Separation Plant E B Mawsons & Sons 4.1 km WSW of southwest boundary Adjacent to southeastern site boundary Mineral sand processing plant Gravel quarry and concrete batching plant Extraction operations are currently at the nearby Mawsons Quarry. Perilya Broken Hill Operations Pty Ltd undertakes separate mining operations to the northeast and southwest of the Project Area. The northern operations are in a care and maintenance phase, with emissions from the site expected to be primarily from wind erosion of exposed surfaces. Perilya operations to the southwest comprise underground mining operations with surface processing. Tailings from this operation are currently sent to a storage facility located approximately 5 km to the southwest of the Project Area. It is noted at this point that due to the scale and nature of the existing surrounding operations, these sources are not considered to be substantial contributors of particulate matter emission to the local air shed. Rather, due to the arid location of Broken Hill, naturally generated dust storms are a likely significant contributor to elevated ambient particulate matter concentrations events in the region. Review of Bureau of Meteorology (BoM) records for recent years highlighted various occurrences of dust storms along with other days where sustained periods of high winds contributed to the persistence of significant levels of visible dust. Dust storms worthy of being recorded by the BoM due to their severity occurred on 2% 58

59 of days over the 2007 to 2009 period. This is likely to exclude days on which more minor events resulted in dust episodes. Wind blown dust thus represents a key component of suspended particulate concentrations and dust deposition in the area. Other potential sources of atmospheric emissions in the vicinity of the Project include: Dust entrainment due to vehicle movements along unsealed and sealed town and rural roads with high silt loading levels; Vehicle exhaust and rail related emissions; and Episodic emissions from vegetation fires. Fugitive dust from long-range transport of fine particles is also expected to contribute to suspended particulate concentration in the study area. 9.2 D2 Monitoring Data Available for Baseline Air Quality Characterisation Monitoring data sets which were made available and used in the characterisation of the existing air quality in the study area are listed in Table D2. The locations of the BHOP sampling stations are given in Figure D1. Table D2 - Monitoring data sets used in the baseline air quality characterisation Data Owner / Data Set Sampling Sites Parameters Measured Monitoring Duration BHOP HVAS 1 station: on-site adjacent to Dust Deposition Gauge D5 TSP and Lead (onein-six day cycle) May 2007 Jan 2010 BHOP Dust Deposition 6 dust gauge sampling stations: D1 to D5 and Casuarina Ave Dust deposition and Pb (30 day +/- 2 day cycle) March 2007 December 2009 Bemax HVAS 1 station: onsite adjacent to Bemax operations PM 10 (one-in-six day cycle) May 2006 Jan 2010 HVAS high volume air samplers 59

60 Figure D1: Locations of BHOP monitoring stations 9.3 D3 Ambient TSP Concentrations The 24-hour average TSP concentrations recorded by the BHOP HVAS between January 2008 and December 2009 are presented in Figure D2. The maximum recorded 24-hour average TSP concentration for the period January 2008 and December 2009 was µg/m³. This peak concentration occurred during a recorded dust storm event in March Annual average TSP concentrations of 47.8 µg/m³ and 64.9 µg/m³ were recorded for 2008 and 2009 respectively, while the dataset average was 56.4 µg/m³. Ambient concentrations of TSP were therefore within the annual guideline value of 90 µg/m³ for 2008 and 2009, with measured levels comprising about 50% to 70% of the guideline value. 60